Type-writing machine.



S. T- SMITH.

TYPE WRITING MACHINE. APPLICATlON HLED JUNE 2,1914.

Patented Nov, 9, 1.915.

S. T. SMITH. TYPE WRITING MACHINE.

APPLICATION FILED. JUNEZ. I914.

Llfigfig? Patented Nov. 9,1915. I

3 SHEETSSHEET 2.

S. T. SMITH.

TYPE WRITING MACHINE.

APPLICAHON FILED JUNE 2. 1914. I

1,159,427; v Patented Nov. 9, 1915.

3 SHEETSSHEET 3- strap erase Parana FFI@E.

STEPHEN '1. SMITH, OF STAMFORD, CONNECTICUT, ASSIGNOR T0 UNDERWOOD TYPE-WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Nov. 9, 1915.

1 0 all whom it may concern:

Be it known that I, STEPHEN residing in Stamford, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Typel/Vriting Machines, of which the following is aspecification.

This invention relates particularly to typewriting machines of the classin which two machine frames are mounted side by side and each providedwith a separate type system, in Combination with a paper carriagetranslatable from the printing zone of one type system to that of theother.

A feature of the invention is the provision of left-hand and right-handmargin gages or stops for determining the normal letter-feed travel andreturn travel of the carriage in each printing zone; said margin gagesarranged and combined with means to enable the carriage to be carriedover from one printing zone to the other without. interference from thegages. The lefthand margin gages cooperate with linelocking mechanismsand means for operating a signal bell. A separate line-lock may beprovided for each set of type keys, and release keys may be provided forreleasing the keys.

In carrying out the invention, the carriage is mounted to travel onguide ralls, which may extend uninterruptedly across both machine framesto permit the carriage to travel across both printing zones and from onezone'to the other. Right-hand and left-hand margin gages may have asliding connection witlra rodeXtending across both machine frames, andfiXed at its ends in the outer ends of the machine frames. A single rackbar extending across both machine frames is mounted to rock on saidfixed rod as a fulcrum. The left-hand margin gages may have a' slidingconnection with said rack bar,'and cams on said lefthand gages may beactuated by a projection on the carriage to depress'said rackbar'andswing forward the lower ends of arms depending from the rack bar, one ofthe said arms operable to ring a signal bell, and each of said armsarranged to operate a line-locking device for locking a set of typekeyswhen the end of the been reached. The right-hand margin lifie of writinghas gages or stops may be held in any position of adpistment by a fixedrack bar extendmg across the said swinging rack bar. The four margingages are arranged in alternation, the first, or right-hand gage on theright-hand machine frame determining the beginning of a line in theright-hand printing zone, the second gage determining the end of theline in the right-hand printing zone, the third determining thebeginning of a line in the left-hand zone, the end of the line in theleft-hand zone. In order to permitthe carriage to be carried overfromthe right-hand to the left-hand printing gage which operates-theline-lockingmcchamsm, is formed to permit the carriage to r de past it,and in order to permit the carriage to movepast the said third gage, thecounter-stop on the carriage which is normally intercepted by theright-hand margin gages, is in the form of a latch and may ride over thestop on said third gage. D'aid latch is also operable by a finger key topermit the carriage to be moved from the lefthand zone to the right-handzone.

Other features and advantages will hereinafter appear.

Certain features of the invention are usable in other connections, asfor instance some of the margin gage devices may be used with widecarriages in simple typewriting machlnes.

In the accompanying drawings, Figure 1 is a perspective view of themachine, parts being broken away, and the front guide rail for thecarriage removed to show the underlying parts.- Fig. 2 is a detail planview of one of the left-hand margin gages. Fig. 3 is a sectional detailshowing a right-hand margin gage. Fig. l is a sectional elevation viewshowing the line-locking mechanism in locking position. Fig. 5 is asectional elevation of the machine, showing the parts in their normalposition of rest. Fig. 6 is a fragmentary detail view of a portionof theline-locking mechanism. F 1g. 7 1s a perspective view of. theline-locking mechalnsm, the line lock for the right-hand set of keysbeing shown in released position. Fig. 8 is a detail view of aline-lockrelease key.

Two machine frames A and B, which may be the usual Underwood machineframes,

machine frames parallel with and the fourth determiningzone, the cam onthe said second.

are mounted side by side on a common base 2, and may be secured to thebase by bolts 3, and also secured together by front and rear platesorconnecting blocks 1 and 5. secured by screws to the tops of the machineframes. Each frame carriesa type system comprising a set of type-bars 6fulcrumed on a rod 7 to swing upwardly and rear- Wardly against thefront face of a roller platen 8. The type-bars are operated by keys 9 onkey levers 10. fulcrumed on a rod 11 and connected through hell cranks12 to the type-bars. The platen S is mounted in a frame 13 shiftable toupper and lower case position in the paper carriage 11, said carriagemounted to travel on front and rear guide rails 15 and 16, which mayextend uninterruptedly across both machine frames. whereby the carriagemay be shifted from the printing zone of one set of type-keys to that ofthe other set.

The carriage may be driven by a spring drum 17 journaled on-one 'of themachine frames and connected through a band 18 to the carriage. Theletter-feed travel of the carriage is controlled by escapement mechanismcomprising a pmlon 19 running in mesh with the rack 20 on the carriage.said pinion connected to drive an escapement wheel 21 controlled byescapement dogs 22 on a dog rocker '23. the latter being actuatedwriting -comn 1ences.- are slidably mounted on a ,rod 28, which may befixed at its ends in the outer ends of the frames A and B, and

which may be supported at an intermediate point by a bracket or wing 29on the plate t." Adjustable collars 30 may limit. the adjustment of thegages 26 toward the right. Each gage 26 comprises a rearwardly extendedarm 31. which has a sliding connec tion with a rack bar 32. providedwith rack teeth 33. said rack bar being parallel with the rod 28. andalso secured to the outer ends of the machine frames. A holding dog 1-H.pivoted to the gage 2("and operated by a finger-piece isv formed withteeth to engage the rack teeth 83 and positively hold the gage againstmovement to the right from any position of adjustment along the rackbar. The two gages 26 may be identical in construction. as may also 'thegages 27. Pointers or index fingers 36 may be attached to the gages 2eand 27, each pointer extending over a scale plate 37 mounted on thefront plate or guide rail 15, (Fig. 5), said pointers indicating theletter-space positions at which the carriage will be arrested by thegages. A pointer 38 on the carriage indicates the position of thecarriage relative to the printing point on either printing zone.

12, saiddogs having teeth to en age teeth l3 on a rack bar H. The rackbar -11 is formed'at its ends with arms 15 journaledon the rod 28, topermit said rack to swing up and, down for actuating the line locks andalso for operating a signal bell.

Near the left-hand end of each machine frame is an arm 46, said armssecured to the rack bar H and extending downward, and each providedatits lower end with a pivoted detent 47 carrying a pin .8 to actuate anarm 49, fixed to a rock shaft 50. A locking bail for the key leverscomprises a locking rod 51 extending transversely beneath the keyleverslO and adapted to be swungforward to engagebeneath hooks 52 on thekey levers and thereby lock the latter. Said rod.

51 is carried by arms loose on the shaft 50. The rod 51 is normally heldin a released position by an arm 54 fixed to therock shaft 50. the rockshaft 50 being under the tension of a spring bearing againstthe frontface of the arm -19.

The rack bar 11 is held upward in normal position by a spring 56, and asthe carriage 14. approaches its limit of travel, determined by theposition of the margin gage 27, a forwardly extending arm 57 on thecarriage strikes a cam 58 on the gage 27 and moves the rack bardownward. thereby swinging the lower end of the depending arm 46 forward to -an intermediate position. The pivoted detent' J. on the lowerend of said arm. as it moves forward, rides on a cam 59 on a rock arm(10, and thereby'rocks the arm (ill-about its pivot (33. said armcarrying the v clapper 61 of a hell (:2. and thus rings the bell toindicate the approach of the carriage toward the end of its travel.After the bell signal is given. the writing may be continued until thearm 57 strikes a high portion o-l. of the cam fiS to further depress therack bar 44 and swing the arm 46 farther forward.

thereby causing the pin -18 to swing the arm 49 forward. and rock theshaft 50. The arm- 110011.52 on adepressed key, or other obten after theline lock has operated. The

key 66 is provided with a cam 67 which, when the key is pushed in,strikes the arm 46 and cams it laterally, thereby carrying the pin dB tothe right and freeing the arm -l9. The spring 55 then rocks said arm 49rearwardly, and with it the locking rod 51, to release the keys. As thecarriage moves forward after the keys have thus been released, theswinging rack 4.4 is permitted to rise to an intermediate position,owing'to the high portion 64 of the cam seating in a depression 68 inthe arm 57, so that the arm 46 swings rearwardly to carry the pin 48 behind the rock arm 49, the detent 47 swinging forward about its pivot topermit the pin 4-8 to ride over the top of the arm 49. The detent 47drops by gravity to its normal vertical position, but is prevented fromswinging beyond such position by a shoulder +7 thereon behind the arml6. Further movement of the carriage causes the arm 57 to again cam therack bar 44 downward to I lock the type-keys.

An abutment 69 carried by the margin gage 27 for theleft-hand printingzone, and

prO ecting into the path of the arm 57 on the carriage, forms a positivestop to finally limit the letter-feed travel of the carriage. Theabutment 69 is omitted from the stop 27 inthe right-hand zone to permitthe carriage to be shifted from one zone to the other.

By reference to Fig. 7, it will be seen that a locking rod 51 isprovided for each set of type-keys, and that a separate arm 46' isprovided for operating and controlling each locking rod 51. A singlebell or signal de vice 6'2 may serve for both type systems, as theswinging rack the bell when the cam 58 in either type zone is actuatedby the carriage. A separate release key 66 is provided'for each linelook, as shown in Fig. 7, so that either set of type keys may bereleased independently of the other.

The return movement of the carriage is limited by a stop lug 70 on the.right-hand margin gage 26, said lug lying in the path of a forwardlyextending end 71 of a releasing latch 72 connected by a pivot 73-to thecarriage, and operable by depressing a tinger-piece 74: on the end ofthe latch to lift the end 71 above the stop 70. This arrangement permitsthe carriage to be moved from one printing zone to the other. If it isdesired to move the carriage from the lefthandprinting zone to theright-hand zone,

bar 44 operates to ring the key 74 is depressed by. hand, leaving thecarriage free ,to move past the stop 7 O.

-moving the carriage from the frame B to the frame A, the end 71 of? thestop latch may ride over the inclined face of the stop 70 without thekey 74: being depressed by hand. A spring 75 returns the latch 72 tonormal position. The latch 72 also permits the carriage, while in eitherprinting zone, to be returned beyond its normal position, for thepurpose of paragraphing, or writing other matter in the left-hand marginof the work-sheet.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with sets of type-barshaving separate printing zones, of a carriage mounted to travel from oneprinting zone to the other, a stop to limit the travel of the carriagein one-printing zone, and means to release the carriage from said stopfor moving the carriage tothe other printing zone.

2. In a typewriting machine with separate systems of types havingseparate printing zones, the combination with a carriage shiftable fromone zone to the other, of a margin stop to limit the return movement ofthe carriage while in the left-hand zone, and, means to free thecarriage from said stop and permit it to be shifted to the right-. handprinting zone.

3. In a typewriting machine having sepa rate printing zones, thecombination with a carriage and a guide rail on which the carriage ismounted to travel in both printing zones and from one zone to the other,of right and left hand margin gages to determine the limit of travel ofthe carriage in both directions while in either printing zone.

at. In a typewriting machine having separate printing zones, thecombination with a carriage and a guide rail on'which the carriage ismounted to travel in both printing zones and fromone zone to the other,of right and left hand margin gages to determine the limit of travelboth directions. while in either printing Zone, said gages eachadjustable in the direction of the carriage travel, and means to freethe carriage from the right-hand gage of the left-hand printing zone topermit the carriage to be shifted from the left-hand zone to theright-hand printing zone.

5. In a typewriting machine, the combination with separate sets oftype-bars and separate sets of type-keys type-bars, of a paper carriageshifta'ble into positions to cotiperate with either set of type-bars, alocking device for each set of of the carriage in for actuating said atethe said locking device for the keys of said zone. L

6. In a typewritmg machine, the combinalocking rod for each set oftype-keys movable into and'out of position to lock the keys of its set,a traveling paper carriage,

'a swinging rack bar, margin gages adjustable along said rack bar, camsconnected to said gages and ad uStabIe therewith, means on the carriageto engage said cams and swing the rack bar, arms depending from said.rack bar, and means actuated by said arms for controlling said lockingrods.

'7. In a typewriting machine, the combination with separate sets oftype-keys, of. a locking rod for each set of type'keys movable into andout of position to lock the keys of its set, a traveling paper carriage,a swinging rack bar, margin gages adjustable along said rack bar, camsconnected to.

- said gages and adjustable therewith, means on the carriage to engagesaid cams and swing the rack bar, arms depending from said rack bar,means actuated by sald arms .for controlling said locking rods, andasig-' nation With separate type-sets and keys for said sets, of a papercarriage movable from the printing zone of one set to the printing zoneof the other set, a signal bell, and means operated by the carriage toring said bell while the carriage is in either printing zone.

10. In a typewriting machine, the combination withseparate type-sets andkeys'for said sets, of a paper carriage movable from v the printing zoneof one set. to the printing zone of the other set, a signal bell, meansoperated by the carriage to ring said bell While the carriage is ineither printing 'tion with separate sets of type-keys, of apapercarriage, and line-locking mechanism for the keys of the right-hand set,said mechanism operated by the carriage, the carriage being movable pastsaid locking mechanism to the left-hand zone.

13. In a typewriting machine, the combinationfof machine frames placedside by side, a set of types and type keys on each frame, said .setshaving separate printing zones, a carriage, a left-hand margin gage forthe right-hand zone, an arm on the carriagecoiiperating with said gage,the carriage being shiftable to move said arm beyond the gage and bringthe carriage into. the left-hand printing zone.

14. In a typewriting machine, the combinationof machine frames placedside by side, a set of type-bars and type keys on each frame, a swingingrack bar, a left-hand margin gage on the right-hand 'machine framehaving a sliding connection with the rack bar and comprisingva camoperable by, the carriage at or near the end of theline of writing inthe right-hand zone, and linelocking mechanism operated by said cam todock the right-hand set of keys, said carriage movable beyond theline-locking .position into the left-hand printing zone.

15. In a typewriting machine, the combination with machine frames placedside by side, of a set oftype-bars and keys on each frame, said setshaving separate printing zones, a'swinging rack extending across bothmachine framealeft-hand'margin gages arljustable along said rack andeach compris ing a cam, an arm on the carriage to engage one of saidcams at the end of a line of Writing ineither zone, line-lockingmechanism operated by said cams to lock the keys, the

cam for the right-hand set formed to per- 'mit. the arm on the carriageto move past the cam for bringing the carriage into the -left-hand zone,and a'stop on the left-hand zone, and line-locking mechanism to lock theset of keys in the zone in which the carriage is traveling.

11. In a typewriting machine, the COIllbination with a plurality of setsof type-bars and keys, said sets having separate printing zones, of apaper carriage mounted to travel in either printing zone, a signal bell,and. line-locking mechanism, said bell and mechanism controlled by thecarriage and operated thereby at the end of a line of writing in eitherzone.

12. In a typewriting machine, the combi nation of frames placed side byside, a set.

of type-bars and type keys on each frame, said sets having separateprinting zones, a

cam to positively limit the movement of the carriage to the left whilein the left-hand I 16. In a, typewriting machine, the (iambination withmachine frames placed side by side, of a set of type keys and type-barson each frame, a guide rod extending across both machine frames, rightand left hand margin gages for both type sets, said gages adjustablealong said rod, and a paper carriage shiftable from one printing zonepast the inner gages into the other printing zone.

17 In a typewriting machine having two separate sets of types and twoseparate printing zones, the combination with a carriage and ineans todrive thecarriage in letter-feed direction, of a margin stop to limitthe letter-feed movement of the carriage in one printing zone, saidcarriage movable in letter-feed direction beyond the stopping positiondetermined by said stop to the other printing zone.

. riage and means to move 18. In a typewriting machine having twoseparate sets of types and two separate printing zones, the combinationwith a carthe carriage in letter-feed direction, of two sets of5typekeys, amargin gage, and line-locking mechanism -controlled' thereby forlocking one set of the keys at the end of a lineof writing in oneprinting zone, the carriage movable beyond the line-locking positiondetermined by the .ad ustment of said gage to the other printing zone.

19. In a typewriting machine, the combination with a system of type-barsand a carriage, of a terminal margin gage which determines the endof theline written by said type-bars, said carriage movable freely past saidgage, and a second system of typebars operable to print on thework-sheet on the carriage while the latter is in said position beyondthe margin gage, said type-bar systems having separate printing zones.

20. In a typewriting machine, the combination with separate sets oftype-bars and keys, of a carriage shiftable into cooperative relationwith either set. line-locking mechanism for locking the keys, andseparate release keys for independently releasingthe keys of either set.

21. A typewriting machine comprising a plurality of keyboards, aplurality of alphabetical type systems having separate printing zones,one type system for each keyboard, the types of each system individuallyoperable by their keys independently of the types in the other system, aletter-feeding paper carriage adjustable from a position to coiiperatewith only one type system to a position for cooperating with'only theother type system, and margin-gage devices to cooperate with saidcarriage.

22. In a typewriting machine, the combination with two type systemshaving sepa rate printing zones, of a letter-feeding carriage movableinto cooperation with either type system, and margin-gage mechanism tocooperate with said carriage to determine the beginning and ending ofthe line of writing when the carriage is cooperating with each of saidtypesystems.

23. In a typewriting machine, the combination with two typesystems-having separate printing zones, of a letter-feeding carriagemovable into cooperation witlreither type system, and margin-gagemechanism to cooperate with said carriage to determine the beginning andending of the line of writing when the. carriage is cooperating witheach of said type systems; said margingage mechanism comprising acarriagearresting device which is releasable to permit the transit ofthe carriage from one type system to the other.

24. In a typewri-ting machine, the combination with two typesystemshaving separate printing zones, of a letter-feeding carriage movableinto cooperation with either type system, and margin-gage mechanism tocoiiperate with said carriage -to determine the beginning and ending ofthe line of "writing when the carriage is cooperating with each of saidtype systems; said margingage mechanism comprising a carriagearrestingdevice which is releasable. to permit the transit of the carriage fromone type system to the other in the direction opposite to letter-feedingdirection.

25. In a typewriting machine, the combination with two type systemshaving separate printing zones, of a letter-feeding carriage movableinto cooperation with either type system, and margin-gage mechanism tocooperate with said carriage to determine the beginning and ending ofthe line of writing when the carriage is cooperating with each of saidtype systems; said margingage' mechanism comprising a carriage-arrestingdevice which is releasable to permit the transit of the carriage fromone type system to the other in the direction opposite to letter-feedingdirection, and also comprising a carriage-arresting stop which isreleasable to permit the carriage to advance in letter-feeding directionfrom one type system to the other.

26. In a typewriting machine, the combination with two type systemshaving separate printing zones, of a lettenfeedingcan riage movable intocooperation with either type system, and margin-gage mechanism tocooperate with .said carriage to determine the beginning and ending ofthe line of writing when the carriage is cooperating with each of saidtype systems; said margin-gage mechanism comprising a carriage-arrestingdevice which is releasable to permit the transit of the carriage fromone type system to the other in the direction opposite toletterriage-arresting stop which is releasable to permit the carriage toadvance in letterfe'eding direction from one type system to the other;said carriage'being also freely movable past the last-mentioned stopwhen passing from one type system to the other in a direction oppositeto letter-feeding direction.

27. In a typewriting machine, the combination with two separate systemsof types having separate printing zones, of a carriage movable from onezone to the other, separate keyboards for said type systems, andline-locking mechanism for, said keyboards, said line-locking mechanismunder thecontrol of saidcarriage.

28. In a typewriting machine, the combination with two-separate systemsof types having separate printing zones, of a carriage movable from onezone to the other, separate keyboards for said type systems,

tems having separate printing zones and a carriage shiftable to positionto cooperate with either type system and having letterfeeding movementswhen in cooperation with each type system, of margin gages forcontrolling the length of the written line when said carriage 1scooperating with each type system; said carriage being movable,

from one printing zone to the otherindependently of said margin gages.

30. The combination with two type systems having separate printing zonesand a carriage shiftable to position to 006 erate with either typesystem and having etterfeeding movements when in cooperation with eachtype system, of margin gages for controlling the length of the writtenline when said carriage is coiiperating with each type system; saidcarriage being movable from one printing zone to the other independentlyof said margin gages, and linelocking mechanism controlled by aplurality of said margin gages. A

31. The combination with two type systems having separate printing zonesand a carriage shiftable to position to cooperate with either typesystem and having letter feeding movements when in cooperation with eachtype system, of margin gages for controlling the length of the Writtenline when said carriage is cooperating with'each type system; saidcarriage being movable from one printing zone to the other independentlyof said margin gages, line-locking mechanism controlled by a pluralityof said margin gages, and means to release the line locklng mechanism.

32. The combination with two keyboards Y and two type systems havingseparate printing zones, of a carriage shiftable toposition to cooperatewith either type system and having letter-feeding movements when incooperation with each type system, margin gages for controlling thelength of the written line when said carriage is cooperating with eachtype system; said carriage being movable from one printing zone to theother independently of said margin gages, and separate line-locking.mechanisms for said keyboards, said line-locking mechanisms under thecontrol of certain of said margin gages.

33. The combination with two type systems having separate printing zonesand a carriage shlftable to position to cooperate with either typesystem and having letterfeeding' movements when in coiiperation witheach type system, of margin gages for controlling the length of thewritten line when said carriage is cooperating with each type system;said carriage being movable from one printing zone to the other independently of said margin gages; the first of said margin gagesdetermining the beginning of a line in the right-hand printing zone, asecond gage determiningthe end of the line in the same zone, a thirdgage determining the beginning of a line-in the lefthand zone, and afourth gage determining the end of the line in the last-mentioned zone.

34. A'typewriting machine comprising a plurality of keyboards, aplurality of alphabetical type systems having separate printing zones,one type system for each keyboard, the types of each systemindividuallyoperable by their keys independently of the types in the other system, aletterfeeding paper carriage adjustable from a position to cooperatewith only one type system to a position for cooperating with only theother type system, and margimgage and line-locking devices to cooperatewith said carriage.

STEPHEN T. SMITH. Witnesses W. O. WEs'rPHAL, Trros H. IRVON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of ftatents, Washington, D. C,

